Uncertainty of criticality analysis of UO $_{2}$ -concrete system under randomization

Ueki, Taro

Analysis framework under indeterminate material distribution is investigated for the Monte Carlo (MC) criticality calculation of continuously mixed media formed via molten core concrete interaction. Randomized Weierstrass functions (RWF) are utilized to represent the volume fractions of constituent materials. The possibility of several percent fluctuation of effective multiplication factor is shown by the MC simulation with delta-tracking.

Language	:	Japanese
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Meeting title	:	日本原子力学会2016年春の年会
Held date	:	2016/03
Location (city)	:	仙台
Location (country)	:	日本
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Keywords	:	確率的乱雑化; 燃料デブリ; 二酸化ウラン・コンクリート; 臨界計算; モンテカルロ法; デルタ追跡法
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Cooperating Institute	:	原子力規制委員会原子力規制庁

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Registration No. : BB20152837
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Uncertainty of criticality analysis of UO-concrete system under randomization

Uncertainty of criticality analysis of UO $_{2}$ -concrete system under randomization